The claws of dinosaurs had many functions, but a team from the University of Bristol and the Institute of Vertebrate Paleontology and Paleoanthropology (IVPP) in Beijing has now demonstrated that some predatory dinosaurs used their claws for digging or even for display purposes. The study, which
. However, this is unlikely. These long, narrow claws were too weak for combat.” said Dr. Chun-Chi Liao, an expert on therizinosaurs from IVPP who co-authored this study. “Our engineering simulation shows that these claws could not withstand much stress.”could use their claws as powerful hooking tools when feeding on leaves from the trees,” Dr.
Key taxa and work pipeline use in this paper. Silhouettes show the large and elongated forelimb of the late-branching therizinosaurian Therizinosaurus and the overall body shape and highlighted forelimb of the late-branching alvarezsauroid Mononykus , scaled against an adult human .
“Our previous work has shown that alvarezsaurs evolved to become the tiniest dinosaurs by the end of the, and these dinosaurian midgets were using their punchy little claws for digging into ant hills and termite mounds. They were ant-eaters,” said Zichuan Qin.from the Jurassic, had multifunctional hands, but they were not good at digging. Their much smaller descendants had the efficient digging hands so they could feast on the Late Cretaceous termites,” added Zichuan Qin.
“Science and technology cannot bring dinosaurs back to life, but advanced computing and engineering techniques can show us how extinct animals lived,” said Professor Emily Rayfield, one of Zichuan’s supervisors, and an expert of dinosaur biomechanics. “Especially for extinct animals like alvarezsaurs and therizinosaurs, they are so bizarre that we even can’t find any living animals like them.
Reference: “Functional space analyses reveal the function and evolution of the most bizarre theropod manual unguals” by Zichuan Qin, Chun-Chi Liao, Michael J. Benton and Emily J. Rayfield, 16 February 2023,
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